20mm Ballast, also known as All-in Ballast is a 50/50 mixture of sharp sand and 20mm down crushed aggregate. Used mainly for foundation work and footings, other uses include concrete driveways & paths and concreting in fence posts.
- Ballast/Sand and gravel mixed
- Size – 20mm
- Can be used for multiple purposes
- Can be used to fill voids in construction projects